InterNACHI Plumbing Practice Exam

Inspectors are not required to operate all plumbing and fuel shut-off valves during an inspection due to safety and practical considerations. The main goal of an inspection is to assess the condition of plumbing and fuel systems without causing any potential hazards or disruptions. Operating shut-off valves can sometimes lead to leaks or other issues if the valves are stuck, rusted, or otherwise compromised.

Inspectors must focus on their primary task of identifying visible problems and significant risks without taking actions that could inadvertently create new issues. This approach aligns with industry standards and practices that prioritize safety and thorough evaluation over mandatory operation of every component. Therefore, while inspectors may test some valves as part of a comprehensive assessment, it is not a requirement to operate every shut-off valve during an inspection.